The Quadro line of GPU cards emerged in an effort at market segmentation by NVIDIA. In introducing Quadro, NVIDIA was able to charge a premium for essentially the same graphics hardware in professional markets, and direct resources to properly serve the needs of those markets. To differentiate their offerings, NVIDIA used driver software and firmware to enable features vital to segments of the workstation market; e.g., high performance anti-aliased lines and two-sided lighting were reserved for the Quadro product. In addition, improved support through a certified driver program was put in place. These features were of little value in the gaming markets that NVIDIA's products already sold to, but prevented high end customers from using the less expensive products. This practice continues even today although some products use higher capacity faster memory.